"If you have a better idea, propose it to us."

Translation: Si tu as une meilleure idée, propose-la-nous.

[Matt501837]

Is there any reason why this stays feminine, but, 'si tu fixes une date' is changed to masculine? Or is it just one of those weird exceptions?

[DaveyElder]

Is it propose-la-nous because idée is feminine?

[Seattle_Scott]

Yes.